1 files changed, 23 insertions, 0 deletions
diff --git a/testing/web-platform/tests/webstorage/storage_length.window.js b/testing/web-platform/tests/webstorage/storage_length.window.js
new file mode 100644
index 0000000000..9648e48c8d
--- /dev/null
+++ b/testing/web-platform/tests/webstorage/storage_length.window.js
@@ -0,0 +1,23 @@
+["localStorage", "sessionStorage"].forEach(function(name) {
+    test(function() {
+        var storage = window[name];
+        storage.clear();
+        assert_equals(storage.length, 0, "storage.length")
+
+        storage["name"] = "user1";
+        storage["age"] = "20";
+
+        assert_equals(storage.length, 2, "storage.length")
+    }, name + ".length (method access)");
+
+    test(function() {
+        var storage = window[name];
+        storage.clear();
+        assert_equals(storage.length, 0, "storage.length")
+
+        storage.setItem("name", "user1");
+        storage.setItem("age", "20");
+
+        assert_equals(storage.length, 2, "storage.length")
+    }, name + ".length (proprty access)");
+});